cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A124042 Number of permutations of n distinct letters (ABCD...) each of which appears thrice with two fixed points.

Table of values

n a(n)
0 0
1 9
2 378
3 84510
4 38358540
5 31234760055
6 41467520432646
7 83805898840005132
8 244832935610272588920
9 993012060508835944545045
10 5413243051841698780829328690
11 38622438042365626607874252846474

List of values

[0, 9, 378, 84510, 38358540, 31234760055, 41467520432646, 83805898840005132, 244832935610272588920, 993012060508835944545045, 5413243051841698780829328690, 38622438042365626607874252846474]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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